Google announced several sessions on Android for its Google I/O 2009 developer conference. Scheduled for May 28-29 at the Moscone Center in San Francisco, Google I/O will feature Android sessions on the UI toolkit, visual design, and supporting multiple devices with a single binary,… says Google.

Google's inaugural developer conference last year brought together over 3,000 attendees for more than 90 sessions, says Google. The search giant used the conference to make its first public demonstration of the gesture-based touchscreen interface, as well as various geo-location and Google Maps integration features of the Linux/Java Android stack. Android is currently running only on T-Mobile's G1 phone (pictured above), built by HTC, but by late May, other vendors, including Samsung, may have shipped their Android phones, and HTC may be ready to show off its second-generation G2 phone.

This Google I/O website lists 80 technical sessions, with more to be added later, and features breakouts, fireside chats, and “informal opportunities to meet subject matter experts,” says the company. In addition to the Android sessions listed below, other topics include App Engine, Chrome, GWT, AJAX APIs, OpenSocial, and Geo APIs:

Turbo-charge your UI: How to make your Android UI fast and efficient — Tips, techniques, and tricks for making Android applications fast and responsive, focusing on optimizations recommended for using the UI toolkit

Pixel perfect code: How to marry interaction and visual design the Android way — Creating a visual design that supports structure, behavior, and expression, using a variety of “interaction design patterns” incorporated in the Android system framework

Supporting multiple devices with one binary — Using the Android application framework to make an application run on a wide variety of devices without having to build a custom version for each

Availabilty

Registration is currently open, and space is limited, says Google. Those who register by May 1 will receive a hard copy of the “Google Chrome Comic” book, says the company. More information may be found here.